/**
 *    Copyright (C) 2008, 2009  Victor Smirnov <aist11@gmail.com>
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License along
 *    with this program; if not, write to the Free Software Foundation, Inc.,
 *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 *    See LICENSE.exceptions in the root folder of this project for possible
 *    exceptions
 *
 */

#ifndef _CUBEFS_CORE_CONTAINER_TOOLS_HPP
#define	_CUBEFS_CORE_CONTAINER_TOOLS_HPP

#include <cubefs/api/types.hpp>
#include <cubefs/core/tools/types/typelist.hpp>
#include <cubefs/core/container/builder.hpp>

namespace cubefs    {
namespace ctr       {

using cubefs::TypeList;
using namespace cubefs::tools;


template <Int Code>
class Default {};

template <typename List>
class AppendLeft {};

template <typename List>
class AppendRight {};

template <typename List>
class Override {};

template <typename Value, typename DefaultValue> struct ParameterTool;


template <Int Code, typename DefaultValue>
struct ParameterTool<Default<Code>, DefaultValue> {
    typedef DefaultValue                                                        Value;
};

template <typename List, typename DefaultValue>
struct ParameterTool<AppendRight<List>, DefaultValue> {
    typedef typename AppendTool<
                typename AsListTool<List>::List,
                typename AsListTool<DefaultValue>::List
    >::Result                                                                   Value;
};

template <typename List, typename DefaultValue>
struct ParameterTool<AppendLeft<List>, DefaultValue> {
    typedef typename AppendTool<
                typename AsListTool<DefaultValue>::List,
                typename AsListTool<List>::List
    >::Result                                                                   Value;
};

template <typename List, typename DefaultValue>
struct ParameterTool<Override<List>, DefaultValue> {
    typedef List                                                                Value;
};

}
}

#endif	// _CUBEFS_CORE_CONTAINER_TOOLS_HPP